Sail system for sailboards, and boardsailing apparatus and method
원문보기
IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0574004
(1983-12-23)
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국제출원번호 |
PCT/US83/00616
(1983-04-21)
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§371/§102 date |
19831223
(19831223)
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국제공개번호 |
WO-8303805
(1983-11-10)
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발명자
/ 주소 |
- Jamieson Robert S. (667 S. Hudson Ave. Pasadena CA 91106)
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인용정보 |
피인용 횟수 :
3 인용 특허 :
3 |
초록
▼
An improved single-boom sailing rig for sailboards, and methods of use, are disclosed. A curved, rotatable boom (100) is provided with a forward end set at a slight angle with respect to the chord, with a separately-rotatable camber control (110) located in the forward end within reach of the sailor
An improved single-boom sailing rig for sailboards, and methods of use, are disclosed. A curved, rotatable boom (100) is provided with a forward end set at a slight angle with respect to the chord, with a separately-rotatable camber control (110) located in the forward end within reach of the sailor\s forward hand, for controlling sail curvature with sails (18 and 19) filled and drawing. A finger-operated mast clamp (120) connects boom (100) to mast (13) and provides pivot pin (126) as a bearing onto which the boom (100) may be pushed during assembly. A boom extension (130) is provided with an eccentric locking mechanism for matching boom length to various sail sizes. An alternative extension (230) is locked by insertion of a pin (233) through any of a series of holes (234). Boom extensions (130 and 230) are provided with a sand-proof aft boom bearing assembly (140) having an aft pivot pin (141) which is pushed into plug (145) during assembly, to connect the clews of sail components (18 and 19). A resilient line (149) and a wingscrew (153) provide length and differential sail stretch matching adjustments for sail components (18 and 19), to prevent air leaks between flap (21) of upper sail component (18) and head (22) of lower sail component (19). Sand is excluded from entering camber control (110) and extension (130) by compression of heat-shrink tubes (119 and 139) against wiping rings (118 and 132). In a variation using low-stretch composite sail materials, or radially-cut sails, the wingscrew (153) is eliminated and clew plates (150 and 155) may be replaced by grommets. The sailor matches the length of boom (100) to that of the sails of his choice by moving extension (130 or 230) in or out of boom end (103) and locking it in place. With the sail full and drawing, the sailor may change sail curvature by rotating camber control (110) with his forward hand.
대표청구항
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A sail system for a sailing craft, for example a sailboard, of the type in which an operator rides in standing position, and manipulates the sail system in order to effect propulsion of the board, the sail system comprising a mast (13), sail means connected to the mast (13), the sail means including
A sail system for a sailing craft, for example a sailboard, of the type in which an operator rides in standing position, and manipulates the sail system in order to effect propulsion of the board, the sail system comprising a mast (13), sail means connected to the mast (13), the sail means including an upper sail component (18) and a lower sail component (19), a single boom (100) extending generally transversely away from the mast (13) to the vicinity of the clews (150,155) of the sail components (18,19), adapted to be held by the operator when sailing, having mast connecting means (120) and aft bearing and clew connecting means (140) adapted to permit free rotary motion between the boom (100) and the sail components (18,19), the aft bearing and clew connecting means including a loose-fitting, short-length bearing assembly comprising a pivot pin (141) mounted coaxially in the aft end of the boom (100) and extending through the substantially larger inner diameter of at least one clew connecting annulus (146,147), the annulus (146,147) being free to move a substantial distance both radially and axially so as to prevent the entrapping of sand and resulting seizure.
이 특허에 인용된 특허 (3)
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Pollard Jerry B. (Woodinville WA), Boom assembly for sailboard.
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Jamieson Robert S. (411 N. Bush Anaheim CA 92805), High efficiency aerodynamic sail system for boats, and method for sailing.
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Carn Patrick (Route de Benodet 29000 Quimper FRX), Sail boards.
이 특허를 인용한 특허 (3)
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Blackmer Richard (109 Oakwood Dr. Scotia NY 12302), Control tackle apparatus for a sailboard rig outhaul.
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Farrar Austin P. (Orchard House ; Stutton Ipswich ; Suffolk ; IP9 2RY GBX), Sail for a sailing craft.
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Wallasch Lutz (1036 Archer Pl. Baldwin NY 11510), Sail furling device with bearings to permit simultaneous cable and extrusion rotation.
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